<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录成功</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background-color: #f0f2f5;
        }

        .success-container {
            text-align: center;
            padding: 40px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .success-icon {
            color: #4CAF50;
            font-size: 48px;
            margin-bottom: 20px;
        }

        .countdown {
            color: #666;
            margin-top: 20px;
        }
    </style>
</head>
<body>
    <div class="success-container">
        <div class="success-icon">✓</div>
        <h1>登录成功！</h1>
        <p>您即将在 <span id="countdown">3</span> 秒后自动跳转...</p>
    </div>

    <script>
        // 倒计时和跳转功能
        let seconds = 3;
        const countdownElement = document.getElementById('countdown');
        const timer = setInterval(() => {
            seconds--;
            countdownElement.textContent = seconds;
            if (seconds <= 0) {
                clearInterval(timer);
                // 替换以下URL为实际需要跳转的页面地址
                window.location.href = 'https://www.xatu.edu.cn';
            }
        }, 1000);
    </script>
</body>
</html>